CN106654829A - Tunable ultrashort pulse fiber optic parametric oscillator - Google Patents
Tunable ultrashort pulse fiber optic parametric oscillator Download PDFInfo
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- CN106654829A CN106654829A CN201710098863.0A CN201710098863A CN106654829A CN 106654829 A CN106654829 A CN 106654829A CN 201710098863 A CN201710098863 A CN 201710098863A CN 106654829 A CN106654829 A CN 106654829A
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- 239000000835 fiber Substances 0.000 title claims abstract description 31
- 239000013307 optical fiber Substances 0.000 claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 230000010287 polarization Effects 0.000 claims abstract description 18
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 15
- 241000931526 Acer campestre Species 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 4
- 230000002269 spontaneous effect Effects 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- SITVSCPRJNYAGV-UHFFFAOYSA-L tellurite Chemical compound [O-][Te]([O-])=O SITVSCPRJNYAGV-UHFFFAOYSA-L 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910003327 LiNbO3 Inorganic materials 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 230000000886 photobiology Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Lasers (AREA)
Abstract
The invention discloses a tunable ultrashort pulse fiber optic parametric oscillator and relates to the fields of parametric oscillators and lasers. The oscillator comprises a tunable laser, an isolator, an intensity modulator, a first amplifier, a filter, a phase modulator, a second amplifier, a first polarization controller, a circulator, a chirped fiber grating, a wavelength division multiplexer, a high-nonlinearity optical fiber, an optical fiber coupler and a second polarization controller. The oscillator adopts a time lens system to compress optical pulse to realize an ultrashort pulse source with tunable repetition frequency and operating wavelength, the repetition frequency is decided by a radio frequency signal applied to a time lens and is very easy to be synchronous to the parametric oscillator. Through utilization of the tunable characteristics of the repetition frequency and the wavelength of the light source of the time lens and combination of time dispersion tuning and pump wavelength tuning mechanism, the fiber optic parametric oscillator can realize the ultrashort pulse laser output at tunable wide working waveband and high pulse quality.
Description
Technical field
The present invention relates to parametric oscillator, field of lasers, more particularly relate to a kind of tunable ultrashort pulse optical fiber ginseng
Amount oscillator.
Background technology
Ultra-short pulse source（Psec, femtosecond magnitude）The indispensable instrument of modern science and production is had become, extensively
It is applied to each scientific research and industrial circle, such as nonlinear optics, Ultrafast spectrum, Photobiology, photochemistry, micro-nano technology.
How to develop high performance tunable ultra-short pulse laser source becomes the task of top priority for opening many exciting applications.
During typical non-linear parameter, such as four-wave mixing（Four-wave mixing）In, it is a branch of high-power
Pump light and a branch of flashlight interact in nonlinear dielectric and produce a branch of ideler frequency light, and pump energy is simultaneously to flashlight
With ideler frequency light transfer, realize that gain is amplified.Nonlinear dielectric is placed in resonator, it is full using high-power pumping light stimulus
A pair of spontaneous emission noises of sufficient phase-matching condition will obtain gain as flashlight and ideler frequency light in resonant process.When
Interacvity gain obtains flashlight and ideler frequency light output more than when being lost, here it is optical parametric oscillator.Optical parametric oscillator
The transparent window of medium is limited solely by with many advantages, including gain band；With large gain bandwidth, broadband can be supported
Tunable laser works；The parametric process response time is femtosecond magnitude, while being applied to continuous and pulse laser.
In order to produce ultrashort light pulse, parametric oscillator must be synchronous with the holding of pumping pulse light source.Common practice is
Chamber is adjusted using optics variable delay line long, it is ensured that synchronism simultaneously realizes certain wavelength tuning.But chamber length is adjusted can be to resonance
Unstability is brought in chamber, and adjustable extent is limited, limits the operating wavelength range and weight of ultrashort pulse optical parametric oscillator
Complex frequency scope.
In sum, there is the tunable model of wavelength, repetition rate in ultrashort pulse optical parametric oscillator of the prior art
It is with the problem of limit.
The content of the invention
The embodiment of the present invention provides a kind of tunable ultrashort pulse Fiber-optic parameter oscillator, to solve prior art in exist it is super
The limited problem of the wavelength of short pulse optical parametric oscillator, repetition rate adjustable extent.
The embodiment of the present invention is provided. a kind of tunable ultrashort pulse Fiber-optic parameter oscillator, including based on time lens
Pump light source unit, the unit that amplifies and warble, vibration chamber unit, the described pump light source unit based on time lens with amplify
Unit is connected with warbling, and the unit that amplifies and warble is connected with vibration chamber unit；Pump light source unit based on time lens produces C
The continuous laser of wave band after intensity and phase-modulation, produce needed for repetition rate initial broad pulse sequence introduce amplify and
Warble unit, obtain ultrashort light pulse of the pulsewidth less than 1ps；Ultrashort light pulse will meet phase-matching condition in RSPUDTcell
A pair of spontaneous emission noises obtain gain and become flashlight and ideler frequency light, adjust based on the pump light source unit of time lens
Pumping pulse light source with vibration chamber unit fiber coupling output laser pulse synchronization, wherein flashlight will in chamber interior resonance,
Ideler frequency light is then exported as parameter laser.
It is preferred that the repetition rate of Fiber-optic parameter oscillator is by being applied to penetrating based on the pump light source unit of time lens
Frequency RF signal decidings, optical maser wavelength is adjusted by tunable laser..
It is preferred that the described pump light source unit based on time lens includes tunable laser, the isolator, institute
State intensity modulator, first amplifier, the wave filter and the phase-modulator and be sequentially connected composition.
It is preferred that described amplification and unit of warbling include the second amplifier, the first Polarization Controller, circulator and warble
Fiber grating is sequentially connected composition.
It is preferred that the output end of first Polarization Controller is connected with circulator first port, circulator second port
It is connected with the chirped fiber grating, the port of circulator the 3rd is connected with vibration chamber unit.
It is preferred that described vibration chamber unit includes that wavelength division multiplexer, highly nonlinear optical fiber, fiber coupler and second are inclined
Shake controller；The unit that wherein amplifies and warble is connected with wavelength division multiplexer first port；Wavelength division multiplexer second port passes through institute
State highly nonlinear optical fiber to be connected with fiber coupler first end, the port of fiber coupler the 3rd passes through second Polarization Controller
It is connected with the end of fiber coupler second, parametric oscillator three-polar output ideler frequency light.
It is preferred that the phase-modulator includes multiple phase-modulators, and multiple phase-modulators are concatenated.
It is preferred that tunable ultrashort pulse Fiber-optic parameter oscillator is using pumping wavelength tuning method or time dispersive tuning method
Wavelength tuning is carried out, specially：
（1）Pumping wavelength tuning method
Adjust the optical maser wavelength of light source in the pump light source unit based on time lens, you can produce different ripples in middle-infrared band
Long ultrashort pulse light, the repetition rate of auxiliary fine setting pumping pulse light so that parametric oscillator must be with pumping pulse light source
Keep synchronous.
（2）Time dispersive tuning method is adjusted
The repetition rate of tuning pump light pulse may be selected different wave length signal optical resonance, when pumping pulse light incidence nonlinear optical
Fibre, will produce the flashlight and ideler frequency light of a series of different wave lengths in the range of parametric gain, due to the presence of fibre-optical dispersion, no
Two-way time of the light component of co-wavelength in parametric oscillator chamber is different, is pumping pulse cycle integral multiple only when two-way time
When, the light component of the wavelength obtains maximum gain and realizes resonance.
In the embodiment of the present invention, there is provided a kind of tunable ultrashort pulse Fiber-optic parameter oscillator, compared with prior art, its
Have the beneficial effect that：
1st, the present invention combines the ultrashort pulse pump light source and nonlinear optical fiber resonator based on time lens, realizes adjustable
Humorous ultrashort pulse Fiber-optic parameter oscillator.Further, the present invention adopts time lens（time lens）System compresses light arteries and veins
Punching, realizes the tunable ultra-short pulse source of repetition rate, operation wavelength, wherein, repetition rate is by being applied on time lens
Radiofrequency signal determine, it is easily synchronous with parametric oscillator；Wavelength is determined by tunable laser.
2nd, the repetition rate of use time lens light source of the present invention, tunable wave length characteristic, binding time dispersion tuning and
Pumping wavelength Tuning mechanism, Fiber-optic parameter oscillator can realize wide service band, high impulse quality ultra-short pulse laser it is defeated
Go out, that is, solve the problems, such as that the wavelength of ultrashort pulse optical parametric oscillator, repetition rate adjustable extent are limited.
3rd, relative to adopting lithium niobate common optical parametric oscillator more（LiNbO3）, potassium dihydrogen phosphate（KDP）Deng brilliant
Body is covered from ultraviolet to each optical band of mid-infrared as nonlinear dielectric, laser output wavelength.But due to nonlinear crystal
With anisotropy, it is therefore desirable to by changing crystal refractive index or pump light incident angle come tuning laser output wavelength, be
System is complicated, difficult in maintenance, and limits the further raising of lasing light emitter performance.Type of the present invention is using highly nonlinear optical fiber as non-
Linear medium builds fiber-optic parametric oscillator, and its tuning performance, practicality and stability have essential progress.
Description of the drawings
Fig. 1 is a kind of tunable ultrashort pulse Fiber-optic parameter oscillator structure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is tellurite glasses optical fiber provided in an embodiment of the present invention typical case's dispersion map；
Fig. 3 is that the flashlight and ideler frequency light for meeting phase-matching condition provided in an embodiment of the present invention changes with pump wavelength
Transformation relation figure；
A kind of tunable ultrashort pulse Fiber-optic parameter oscillator output light spectrogram that Fig. 4 is provided for inventive embodiments.
Description of reference numerals：
101- tunable laser, 102- isolators, 103- intensity modulators, the amplifiers of 104- first, 105- wave filters, 106-
Phase-modulator, the amplifiers of 107- second, the Polarization Controllers of 108- first, 109- circulators, 1091- circulator first ports,
1092- circulator second ports, the port of 1093- circulators the 3rd, 110- chirped fiber gratings, 111- wavelength division multiplexers, 1111-
Wavelength division multiplexer first port, 1112- wavelength division multiplexer second ports, the port of 1113- wavelength division multiplexers the 3rd, the high non-thread of 112-
Property optical fiber, 113- fiber couplers, 1131- fiber coupler first ports, 1132- fiber coupler second ports, 1133- light
The port of fine coupler the 3rd, the Polarization Controllers of 114- second.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of tunable ultrashort pulse Fiber-optic parameter oscillator structure schematic diagram provided in an embodiment of the present invention.Such as Fig. 1 institutes
Show, the oscillator includes：Tunable laser 101, isolator 102, intensity modulator 103, the first amplifier 104, wave filter
105th, phase-modulator 106, the second amplifier 107, the first Polarization Controller 108, circulator 109, chirped fiber grating 110,
Wavelength division multiplexer 111, highly nonlinear optical fiber 112, the Polarization Controller 114 of fiber coupler 113 and second.
Specifically, tunable laser 101 and isolator 102, intensity modulator 103, the first amplifier 104, wave filter
105th, phase-modulator 106, the second amplifier 107 and the first Polarization Controller 108 are sequentially connected；First Polarization Controller 108
Output end be connected with circulator first port 1091, circulator second port 1092 is connected with chirped fiber grating 110, annular
The port 1093 of device the 3rd is connected with wavelength division multiplexer first port 1111；Wavelength division multiplexer second port 1112 passes through high non-linearity
Optical fiber 112 is connected with fiber coupler first end 1131, and the port 1113 of wavelength division multiplexer the 3rd passes through the second Polarization Controller 114
It is connected with the second end of fiber coupler 1132, the output of the 3rd end of fiber coupler 1133 ideler frequency light.
It should be noted that the present invention will be based on the ultrashort pulse pump light source and nonlinear optical fiber resonator of time lens
With reference to realizing tunable ultrashort pulse Fiber-optic parameter oscillator.Further, the present invention adopts time lens（time
lens）System compresses light pulse, realizes the tunable ultra-short pulse source of repetition rate, operation wavelength, wherein, repetition rate by
The radiofrequency signal being applied on time lens determines that easily synchronous with parametric oscillator, wavelength is determined by tunable laser.Make
With the repetition rate in time lens light source, tunable wave length characteristic, binding time dispersion tuning and pumping wavelength Tuning mechanism, light
Fine parametric oscillator can realize the ultra-short pulse laser output of wide service band, high impulse quality, that is, solve ultrashort pulse
The limited problem of the wavelength of optical parametric oscillator, repetition rate adjustable extent.
Further, the present invention builds fiber-optic parametric oscillator using highly nonlinear optical fiber as nonlinear dielectric, its
Tuning performance, practicality and stability have essential progress.
A kind of tunable ultrashort pulse Fiber-optic parameter oscillator provided in an embodiment of the present invention, its operation principle is as follows：
The present invention adopts tunable laser 101, isolator 102, intensity modulator 103, the first amplifier 104, wave filter 105
Constitute based on the high-energy ultrashort pulse pump light source of time lens with phase-modulator 106.Specifically, by tunable laser
Device 101 produces the continuous laser of C-band, and through intensity modulator 103 the initial broad pulse sequence of required repetition rate is obtained, and
Particular phases are introduced using the phase-modulator of multiple series connection to initial broad pulse sequence to warble.
The present invention passes through the second amplifier 107, the first Polarization Controller 108, circulator 109 and chirped fiber grating 110
Pump light source is amplified and is warbled, obtain ultrashort light pulse of the pulsewidth less than 1ps, wherein, time lens light-pulse generator
Repetition rate is determined that optical maser wavelength is determined by tunable laser by radio frequency rf signal, it is achieved that repetition rate, wavelength are all
The pulse laser output that can be tuned on a large scale.
The present invention passes through wavelength division multiplexer 111, highly nonlinear optical fiber 112, the Polarization Controller of fiber coupler 113 and second
114 constitute vibration chamber, after the pump light incidence highly nonlinear optical fiber 112 for amplifying and warbling, meet phase-matching condition
A pair of spontaneous emission noises become flashlight and ideler frequency light by gain is obtained, and adjust pumping pulse coupling light source and optical fiber device 113
The laser pulse synchronization of output, then wherein flashlight will be in chamber interior resonance, and ideler frequency light is then exported as parameter laser.
It should be noted that the theoretical model of the Fiber-optic parameter oscillator being related in the present invention is as follows：
During non-linear parameter, using high-power pumping light stimulus nonlinear optical fiber, pump energy is to other frequencies
Shift and produce parametric gain.The parametric process luminous efficiency of certain frequency depends on phase-matching condition, and expression formula is as follows：
（1）
Wherein,、Difference on the frequency, fibre-optical dispersion parameter respectively apart from pump light.Control phase misalignment dosage existsScope can effectively improve parametric process efficiency, whenWhen parametric gain reach maximum, its
In,、Respectively nonlinear fiber coefficient, pumping light power.SelectAnd, i.e., pumping light frequency is placed in
Normal-dispersion, will be produced centered on pumping light frequency, a pair of gain band of positional symmetry by parametric process.Gain band
Difference on the frequency apart from pump light is：
（2）
Wherein, the zero dispersion point frequency of nonlinear optical fiberIt is to determine, therefore by changing pumping light frequencyCan adjust
The frequency location of parametric gain band, so as to realize flashlight and ideler frequency light wavelength tuning.Nonlinear optical fiber is placed in resonator,
Consider that resonator only produces the situation of resonance to flashlight, the coupledwave equation of the fiber-optic parametric oscillator can be obtained such as
Under：
（3）
（4）
（5）
Consider only have flashlight resonance in an oscillator, be with regard to the boundary condition of flashlight and pump light：
（6）
（7）
Wherein、Respectively nonlinear optical fiber length, the flashlight single cycle loss in resonator.
Fig. 2 is tellurite glasses optical fiber provided in an embodiment of the present invention typical case's dispersion map；Fig. 3 is carried for the embodiment of the present invention
For the transformation relation figure that changes with pump wavelength of the flashlight and ideler frequency light that meet phase-matching condition.With reference to Fig. 2, such as scheme
Shown in 3, the present invention as pumping, adjusts pump wavelength from 1565nm to 1522nm using erbium doped fiber laser, ideler frequency light
Wavelength is tuned to 3 μm from 2 μm, and signal photophase changes to 1020nm from 1286nm.Wherein, the label 301 in Fig. 3 represents signal
Light, label 302 represents ideler frequency light.
The wavelength tuning of ultrashort pulse Fiber-optic parameter oscillator can be realized by following two mechanism in the present invention：
（1）Pumping wavelength tuning method.Adjusting pump wavelength by small range can realize ideler frequency light in the big of middle-infrared band
Range tuner, as shown in figure 4, Fig. 4 is that a kind of tunable ultrashort pulse Fiber-optic parameter oscillator provided in an embodiment of the present invention is defeated
Go out spectrogram.Therefore, the optical maser wavelength of regulating time lens light source, you can produce the ultrashort arteries and veins of different wave length in middle-infrared band
Wash off, and need to aid in the repetition rate of fine setting pumping pulse light so that parametric oscillator must be protected with pumping pulse light source
Hold synchronization.
It should be noted that 401 labels represent the output light curve that the pump light source that wavelength is 1538nm is produced in Fig. 4,
402 represent the output light curve that the pump light source that wavelength is 1540nm is produced, and 403 represent that the pump light source that wavelength are 1548nm is produced
Raw output light curve.
（2）Time dispersive tuning method.When pumping pulse light incidence nonlinear optical fiber, one will be produced in the range of parametric gain
The flashlight and ideler frequency light of serial different wave length.Due to the presence of fibre-optical dispersion, the light component of different wave length is in parametric oscillator
Two-way time in chamber is different, and only when two-way time being pumping pulse cycle integral multiple, the light component of the wavelength obtains maximum
Gain simultaneously realizes resonance.Therefore, the repetition rate of tuning pump light pulse can select different wave length signal optical resonance, so as to reality
The output wavelength tuning of existing Fiber-optic parameter oscillator.
Disclosed above is only several specific embodiments of the present invention, and those skilled in the art can be carried out to the present invention
It is various to change with modification without departing from the spirit and scope of the present invention, if these modifications of the present invention and modification belong to the present invention
Within the scope of claim and its equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of tunable ultrashort pulse Fiber-optic parameter oscillator, it is characterised in that：Including the pump light source based on time lens
Unit, the unit that amplifies and warble, vibration chamber unit, the described pump light source unit based on time lens with amplify and list of warbling
Unit is connected, and the unit that amplifies and warble is connected with vibration chamber unit；Pump light source unit based on time lens produces the company of C-band
After intensity and phase-modulation, the initial broad pulse sequence of repetition rate needed for producing is introduced amplifies and list of warbling continuous laser
Unit, obtains ultrashort light pulse of the pulsewidth less than 1ps；Ultrashort light pulse will meet a pair of phase-matching condition in RSPUDTcell
Spontaneous emission noise obtains gain becomes flashlight and ideler frequency light, adjusts the pumping arteries and veins based on the pump light source unit of time lens
Wash the laser pulse synchronization in source and the fiber coupling output of vibration chamber unit off, wherein flashlight will be in chamber interior resonance, ideler frequency light
Then export as parameter laser.
2. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 1, it is characterised in that：Fiber-optic parameter oscillator
Repetition rate determine that optical maser wavelength is by adjustable by being applied to based on the radio frequency rf signal of the pump light source unit of time lens
Humorous laser instrument is adjusted.
3. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 1 or 2, it is characterised in that：It is described based on
The pump light source unit of time lens includes tunable laser（101）, the isolator（102）, the intensity modulator
（103）, first amplifier（104）, the wave filter（105）With the phase-modulator（106）It is sequentially connected composition.
4. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 1 or 2, it is characterised in that：Described amplification
With unit of warbling including the second amplifier（107）, the first Polarization Controller（108）, circulator（109）And chirped fiber grating
（110）It is sequentially connected composition.
5. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 4, it is characterised in that：The first polarization control
Device processed（108）Output end and circulator first port（1091）Connection, circulator second port（1092）With the chirped light
Fine grating（110）Connection, the port of circulator the 3rd（1093）It is connected with vibration chamber unit.
6. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 1, it is characterised in that：Described vibration chamber list
Unit includes wavelength division multiplexer（111）, highly nonlinear optical fiber（112）, fiber coupler（113）With the second Polarization Controller（114）；
Wherein amplify and warble unit and wavelength division multiplexer first port（1111）Connection；Wavelength division multiplexer second port（1112）Pass through
The highly nonlinear optical fiber（112）With fiber coupler first end（1131）Connection, the port of fiber coupler the 3rd（1113）It is logical
Cross second Polarization Controller（114）With the end of fiber coupler second（1132）Connection, the end of parametric oscillator the 3rd（1133）
Output ideler frequency light.
7. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 3, it is characterised in that：The phase-modulator
（106）Concatenate including multiple phase-modulators, and multiple phase-modulators.
8. tunable ultrashort pulse Fiber-optic parameter oscillator as claimed in claim 1, it is characterised in that adjusted using pumping wavelength
Humorous method or time dispersive tuning method carry out wavelength tuning, specially：
（1）Pumping wavelength tuning method
Adjust the optical maser wavelength of light source in the pump light source unit based on time lens, you can produce different ripples in middle-infrared band
Long ultrashort pulse light, the repetition rate of auxiliary fine setting pumping pulse light so that parametric oscillator must be with pumping pulse light source
Keep synchronous；
（2）Time dispersive tuning method is adjusted
The repetition rate of tuning pump light pulse may be selected different wave length signal optical resonance, when pumping pulse light incidence nonlinear optical
Fibre, will produce the flashlight and ideler frequency light of a series of different wave lengths in the range of parametric gain, due to the presence of fibre-optical dispersion, no
Two-way time of the light component of co-wavelength in parametric oscillator chamber is different, is pumping pulse cycle integral multiple only when two-way time
When, the light component of the wavelength obtains maximum gain and realizes resonance.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104352A (en) * | 2017-06-28 | 2017-08-29 | 中国工程物理研究院激光聚变研究中心 | Optical fiber laser and optical system |
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| CN110687734A (en) * | 2019-10-18 | 2020-01-14 | 北方工业大学 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
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| CN107104352A (en) * | 2017-06-28 | 2017-08-29 | 中国工程物理研究院激光聚变研究中心 | Optical fiber laser and optical system |
| CN107104352B (en) * | 2017-06-28 | 2023-09-08 | 中国工程物理研究院激光聚变研究中心 | Fiber laser and optical system |
| CN107861306A (en) * | 2017-11-24 | 2018-03-30 | 北京遥感设备研究所 | A kind of ultrashort light pulse source suitable for photoelectricity analog-to-digital conversion |
| CN111712761A (en) * | 2017-12-12 | 2020-09-25 | 精密激光系统公司 | Ultrashort pulse laser system with rapidly adjustable center wavelength |
| US11899339B2 (en) | 2017-12-12 | 2024-02-13 | Refined Laser Systems Gmbh | Ultrashort pulse laser system having a quickly tunable central wavelength |
| CN111712761B (en) * | 2017-12-12 | 2023-05-09 | 精密激光系统公司 | Ultrashort pulse laser system with rapidly adjustable center wavelength |
| CN111487833A (en) * | 2019-01-29 | 2020-08-04 | 佳能株式会社 | Optical amplifier and light irradiation device |
| CN113875102A (en) * | 2019-04-25 | 2021-12-31 | 罗切斯特大学 | Drive chamber femtosecond source |
| CN110687734A (en) * | 2019-10-18 | 2020-01-14 | 北方工业大学 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
| CN111442851A (en) * | 2020-04-13 | 2020-07-24 | 重庆大学 | Time lens measuring system based on Raman soliton self-frequency shift |
| CN111442851B (en) * | 2020-04-13 | 2021-01-29 | 重庆大学 | Time lens measuring system based on Raman soliton self-frequency shift |
| CN112018588A (en) * | 2020-07-31 | 2020-12-01 | 杭州海知慧环境科技有限公司 | Tunable passive mode-locking optical fiber parameter pulse laser |
| CN113285344A (en) * | 2021-04-02 | 2021-08-20 | 华东师范大学重庆研究院 | Wide-band tunable two-color ultrafast pulse synchronization technology |
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